Xg^a Investigations of the Family of a Child with a Ring X Chromosome

Abstract

THE Xg blood groups reported under this title in the issue of November 21, 1964, presented some abnormal features¹. We recently had the opportunity to test the family and found the father, the mother, the daughter with the ring X chromosome, the normal daughter and the normal son all to be straightforward Xg(a+). Two examples of anti-Xg^a were used.